Hours: Not sure one would expect pain from a shellfish allergy reaction. In general, an allergic reaction from a food would last a couple of hours to maybe a day or so, if left untreated. If the reaction is treated them one should expect a quicker resloution.
Answered 11/28/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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